1 / 22

Wheel Bearing Failures

Wheel Bearing Failures. Improper Adjustment. RESULT: Large end of rollers & races are worn, galled and spalled. CAUSE: Internal clearances reduced – tight adjustment, excessive thrust. Improper Adjustment. RESULT: Large end of rollers & races are worn, galled and spalled.

thomasgomez
Télécharger la présentation

Wheel Bearing Failures

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Wheel Bearing Failures

  2. Improper Adjustment • RESULT: Large end of rollers & races are worn, galled and spalled. • CAUSE: Internal clearances reduced – tight adjustment, excessive thrust.

  3. Improper Adjustment • RESULT: Large end of rollers & races are worn, galled and spalled. • CAUSE: Internal clearances reduced – tight adjustment, excessive thrust.

  4. Improper Adjustment • RESULT: Large end of rollers & races are worn, galled and spalled. • CAUSE: Internal clearances reduced – tight adjustment, excessive thrust.

  5. Improper Adjustment • RESULT: Small end of rollers & races are worn and spalled. • CAUSE: Loose adjustment.

  6. Misalignment • RESULT: Angled wear of spalling on races. • CAUSE: Cocked installation, improper ring seating, warped shaft.

  7. Misalignment • RESULT: Angled wear of spalling on races. • CAUSE: Cocked installation, improper ring seating, warped shaft.

  8. Misalignment • RESULT: Large end wear opposite small end wear. • CAUSE: Cocked installation, improper ring seating, warped shaft.

  9. Misalignment • RESULT: Large end wear opposite small end wear. • CAUSE: Cocked installation, improper ring seating, warped shaft.

  10. Impact Loading • RESULT: Indented races that can progress to spalling. • CAUSE: Impact load during installation or operation.

  11. Impact Loading • RESULT: Indented races that can progress to spalling. • CAUSE: Impact load during installation or operation.

  12. Contaminated Lubricant • RESULT: Indented and bruised races and rolling elements that can progress to spalling. • CAUSE: Hard particles in lubricant.

  13. Contaminated Lubricant • RESULT: Indented and bruised races and rolling elements that can progress to spalling. • CAUSE: Hard particles in lubricant.

  14. Improper Lubrication • RESULT: Frosting. • CAUSE: Oil film too thin to separate rolling elements and races.

  15. Improper Lubrication • RESULT: Heat discoloration on rolling elements and races. • CAUSE: Inadequate lubrication.

  16. Improper Lubrication • RESULT: Catastrophic failure. • CAUSE: Inadequate lubrication.

  17. Poor Fit in Bore and on Shaft • RESULT: Localized Spalls. • CAUSE: Unsupported outer ring – irregular housing bore.

  18. Poor Fit in Bore and on Shaft • RESULT: Localized Spalls. • CAUSE: Unsupported outer ring – irregular housing bore.

  19. Poor Fit in Bore and on Shaft • RESULT: inner ring cracks during installation. • CAUSE: Excessive press fit.

  20. Poor Fit in Bore and on Shaft • RESULT: Fretted (corroded) and/or polished ID or OD. • CAUSE: Insufficient press fit on shaft or in bore.

  21. Etching • RESULT: Corrosion between rolling elements and races that can progress to spalling. • CAUSE: Moisture.

  22. Etching • RESULT: Corrosion between rolling elements and races that can progress to spalling. • CAUSE: Moisture.

More Related